Multilevel examination of minor salivary gland biopsy for Sjogren's syndrome significantly improves diagnostic performance of AECG classification criteria.

Research output: Contribution to journalArticle

Abstract

The recently observed low reproducibility of focus score (FS) assessment at different section depths in a series of single minor salivary gland biopsies highlighted the need for a standardized protocol of extensive histopathological examination of such biopsies in Sjogren's syndrome. For this purpose, a cumulative focus score (cFS) was evaluated on three slides cut at 200-mum intervals from each of a series of 120 salivary biopsies. The cFS was substituted for the baseline FS in the American-European Consensus Group (AECG) criteria set for Sjogren's syndrome classification, and then test specificity and sensitivity were assessed against clinical patient re-evaluation. Test performances of the AECG classification with the original FS and the score obtained after multilevel examination were statistically compared using receiver operating characteristic (ROC) curve analysis. The diagnostic performance of AECG classification significantly improved when the cFS was entered in the AECG classification; the improvement was mostly due to increased specificity in biopsies with a baseline FS >or= 1 but

Original languageEnglish
JournalArthritis Research and Therapy
Volume7
Issue number2
Publication statusPublished - 2005

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